924results about "Bonded abrasive wheels" patented technology

Systems and methods for grinding semiconductor workpieces are provided. In one example, a method includes providing a surface of the semiconductor workpiece against a grinding apparatus. The grinding apparatus includes an abrasive surface. The method further includes imparting relative motion between the abrasive surface and the semiconductor workpiece to implement a grinding operation on the semiconductor workpiece. The method further includes providing a fluid to the surface of the semiconductor workpiece or the abrasive surface during the grinding operation. The fluid includes an additive. The additive includes one or more of an oxidizing agent, an etchant, a surfactant, or a lubricant.

Grinding systems and methods for semiconductor workpieces are provided. In one example, a grinding system includes a workpiece support operable to support a semiconductor workpiece and rotate the semiconductor workpiece about a first axis. The grinding system further includes a grind wheel operable to rotate about a second axis. The grind wheel has a plurality of grinding teeth arranged in a grinding ring on the grind wheel. A radius of the grinding ring is less than or equal to a radius of the semiconductor workpiece (e.g., such that an effective gap ratio between grinding teeth on the grind wheel are reduced).

The invention discloses an elastic diamond grinding wheel, and particularly relates to the technical field of grinding and polishing machining consumables, the elastic diamond grinding wheel comprises a thin-wall elastic metal cover and a cutter bar, the thin-wall elastic metal cover is of a hollow annular body structure, and the diameter, used for being connected with the cutter bar, of one end of the thin-wall elastic metal cover is smaller than that of the center of the thin-wall elastic metal cover; the diameter of one end of the thin-wall elastic metal cover is larger than that of the center, the diameter of the other end of the thin-wall elastic metal cover is smaller than or equal to that of the center, multiple sets of diamond abrasive particles are evenly arranged on the outer side of the thin-wall elastic metal cover, the cutter bar is arranged at one end of the thin-wall elastic metal cover, one end of the cutter bar is of a hollow structure, and a bolt is connected into the hollow end of the cutter bar through threads. The outer side of the bolt is sleeved with a gasket; according to the diamond grinding wheel, the problem that an existing electroplating grinding and polishing wheel or a brazing grinding and polishing wheel lacks flexibility can be solved, the problem that an existing overlapping wheel or an abrasive belt wheel is short in service life can also be solved, a new consumable tool is provided for automatic blade root fillet grinding, and the quality of a ground and polished blade is guaranteed.

The present invention provides a process of forming a cutting tool comprising the steps of: additive deposition of a tool material comprising at least one of: tungsten carbide, TaNbC, a tungsten carbide containing alloy or composite, or a TaNbC containing alloy or composite onto a base substrate having a longitudinal axis, said tool material being deposited onto the base substrate to form a deposit body configured to form at least one cutting formation therein; and subsequently subtracting selected portions of the deposit body to produce at least one cutting formation having a selected cutting edge configuration, thereby forming the cutting tool.

The utility model discloses a diamond grinding brush applied to glass and ceramics, and relates to the technical field of diamond grinding brushes, the diamond grinding brush comprises a mounting disc and a diamond brush head, the front surface of the mounting disc is provided with a front positioning groove, the back surface of the mounting disc is provided with a back positioning groove, and the back surface of the diamond brush head is fixedly provided with a connecting plate; a connecting block is fixedly installed on the side, away from the diamond brush head, of the connecting plate, an inserting hole is formed in the inner side of the connecting block, and the side, close to the connecting block, of the diamond brush head is inserted into the inner side of the front positioning groove. By the adoption of the structure, after the clamping spring and one fixing bolt are taken down, the limiting frame is pulled out, and at the moment, the spring in the mounting cavity resets to push the limiting plate to move and drive the insertion block to be separated from the insertion hole of the connecting block, so that the diamond brush head can be conveniently and rapidly disassembled, assembled and replaced.

A tool segment (60) for a grinding tool for surface finishing of building materials has a base body (110) with an end face (112), a rear face (114) facing away from the end face (112), and a circumferential region (122) extending between the end face (112) and the rear face (114). The end face (112) is equipped with at least one hard material cutting element (140, 142). The rear face (114) has at least one fastening element (130) for mounting on a base body of a grinding tool. At least one circumferential side (124) of the circumferential region (122) is equipped with at least one hard material cutting element (150). A grinding tool has at least one such tool segment (60). A grinding machine for surface finishing of building materials has at least one such grinding tool.

A skate blade sharpening system used to sharpen the blades of ice skates. The skate sharpener can include a housing that includes an elongated slot for receiving the blade of an ice skate for sharpening, and clamp jaws for retaining the skate. The housing can include at least one slot cover to engage the skate blade. Engagement of the skate blade can be sensed by a controller to enable sharpening operations to proceed. The skate blade sharpening system can automatically operate a grinding wheel and move the rotating grinding wheel back and forth along the lower face of the skate blade a desired number of times to sharpen the skate blade.

An abrasive article can include a core and an abrasive component attached to the core. The abrasive component may include a body including a leading end and a trailing end, wherein the leading end has a width greater than a width of the trailing end. In an embodiment, the abrasive component may include a body including a first abrasive portion and a second abrasive portion, wherein a radial width of the first abrasive portion is greater than a radial width of the second abrasive portion.

The invention provides a composite abrasive part, application, a preparation method and a processing machine tool, the composite abrasive part can be used for inner hole processing and grinding wheel processing, and the composite abrasive part is formed by mixing and pressing multi-granularity composite abrasive particles and a metal-resin binding agent. According to the multi-granularity composite abrasive particles, small-granularity particles are used for filling gaps among large-granularity particles, so that the number of effective abrasive particles participating in material removal on the surface of an abrasive layer is increased, the material removal depth of a single abrasive particle is reduced, and the surface roughness is improved; the composite grinding material piece comprises a rigidity grinding and polishing composite section, and the rigidity grinding and polishing composite section comprises rigidity grinding areas and flexible polishing areas which are sequentially and alternately combined in the axial direction or the circumferential direction of the composite grinding material piece, so that the material removal process is discretized, the possibility of generating machining cracks is reduced, and efficient mirror surface machining is achieved.

The invention relates to a diamond grinding tool capable of preventing workpieces from being scratched, and belongs to the field of grinding machining. Comprising a plurality of grinding pieces and a base body, the multiple grinding pieces are arranged on the base body in a winding mode, a gap between every two adjacent grinding pieces is a chip removal water through groove, and the multiple grinding pieces and the multiple chip removal water through grooves form an annular structure; the grinding part is composed of a grinding part base body and a grinding layer, the grinding layer is composed of a binding agent and a plurality of diamond particles, the diamond particles are solidified on the grinding part base body through the binding agent, and the diamond particles are arranged in a single layer in the circumferential direction of the grinding layer in the rotating direction of the grinding tool. According to the grinding tool, falling diamond particles can directly fall into the chip removal and water passing groove and are discharged out of the grinding tool under the action of centrifugal force and cooling water, the diamond particles do not pass through a grinding area any more, the stagnation or rolling or sliding process of the diamond particles between the surface of a grinding tool binding agent and a workpiece is eliminated, and the scratch-free effect of the workpiece is achieved.

A grinding apparatus has a grinding wheel fastened to a mount disk connected a spindle by a plurality of bolts. The mount disk has at least three threaded holes and a plurality of protrusions protruding from a mount surface thereof. Each of the bolts includes an externally threaded shank, a neck coupled to the externally threaded shank, and an engaging flange coupled to the neck and extending radially outwardly. The grinding wheel includes an annular open hole defined in a mating surface of an annular base for mating with the mount surface, an annular slot that is wider than the annular open hole and is fluidly connected to the annular open hole, at least three insertion holes in the annular open hole for allowing the engaging flange to be inserted into the annular slot, and a plurality of protrusion insertion holes for receiving the engaging flanges of the bolts.

The invention relates to an electroplated single-layer diamond anti-deformation grinding piece, a grinding ring and a special-shaped grinding wheel, the electroplated single-layer diamond anti-deformation grinding piece comprises a grinding layer and a grinding piece base body, and the grinding layer is fixedly connected to the grinding piece base body; the grinding layer is a plating layer of single-layer diamond abrasive particles; the section length of the grinding layer from one side to the other side corresponding to the minimum axial machining allowance of the workpiece is twice the thickness of the grinding layer; and the section length of the grinding layer from one side to the other side corresponding to other points in the axial direction of the workpiece is as follows: machining allowance of the axial point / minimum machining allowance * thickness of the grinding layer. The longer the length of the grinding layer corresponding to the circumferential direction is, the larger the number of diamond abrasive particles contained in the grinding layer is, the higher the abrasive resistance is, and the grinding layer corresponds to a part with large machining allowance; the shorter the length of the grinding layer corresponding to the circumferential direction is, the smaller the number of diamond abrasive particles contained in the grinding layer is, the lower the abrasion resistance is, and the corresponding machining allowance is small, the equal-shape abrasion of a grinding piece is achieved by adjusting the circumferential length of the grinding layer corresponding to all the points of the workpiece in the axial direction, and the shape of the peripheral face is kept unchanged in the machining process of the special-shaped grinding wheel.

The invention relates to the technical field of piston rod machining, in particular to a hydraulic oil cylinder piston rod machining device which comprises a base, a support and an electric push rod and further comprises two spiral supporting rollers, a positioning polishing assembly, a first motor and a second motor. A piston rod to be machined is placed between the two spiral supporting rollers, the positioning polishing assembly is arranged at the output end of the electric push rod and comprises a polishing roller, and when the electric push rod is powered on and started, the polishing roller is driven to move downwards to make contact with the piston rod. By means of the spiral supporting roller, the polishing roller and the spiral scraping groove formed in the surface of the polishing roller, the piston rod can be driven to rotate and move from left to right in the rotating process of the polishing roller, the polishing roller and the piston rod are flexibly clamped, continuous polishing operation is conducted, shutdown is not needed when a new piston rod is replaced, and the production efficiency is improved. And the processing efficiency is greatly improved.

This application relates to a fixed abrasive having a low wettability bond material. An abrasive article includes a fixed abrasive body having a specific MOR / EMOD ratio associated with a specific bond volume percentage. The body also has a micron 2 Average bond post area (BPA) of: b) 1536 mm 2 c) an average bond post count (BPC) of at least 140 per micron; or d) an average bond wetting radius of at least 30 per micron; or d) a combination of a) and b).

The utility model discloses a metal grinding wheel slotting tool, and relates to the field of grinding wheel slotting. The metal grinding wheel slotting tool comprises a base. A plurality of support rods, wherein the plurality of support rods are positioned on the base; the support is arranged at the tops of the supporting rods, and the support is provided with a groove; the rotating platform is connected in the groove, and a connecting hole communicated with the two ends is formed in the rotating platform; the indexing shaft penetrates through the connecting hole and the two ends of the support, and the indexing shaft and the rotating platform are fixed in a pin joint mode; the first screws are arranged on the support and located on the two sides of the rotating platform. And the pressing plate is arranged on the rotating platform, the pressing plate comprises two disc structures, and a matching shaft is arranged between the two disc structures. The tool provided by the utility model is uniform in grooving angle, stable in deep processing, high in grooving efficiency and convenient to clamp.

The invention discloses a modular cup-shaped grinding wheel for curved surface diamond grinding and a using method, and relates to the field of superhard material machining, the grinding wheel comprises a base body, the base body is of a cup-shaped structure, the outer wall of the base body is provided with a plurality of inserting grooves which are evenly distributed at intervals in the circumferential direction, each inserting groove sinks in the normal direction of the outer wall, and the two side faces of each inserting groove can extend downwards and intersect; included angles are formed between the two side surfaces and the bottom surface of the slot; the grinding block is matched with the slot and is mounted in the slot; the pressing plate is of an annular structure, sleeves the outer wall of the base body and is detachably connected with the base body, and the grinding block is pressed by the pressing plate and is detachably connected with the pressing plate; and the grinding material layer is mounted on the lower surface of the grinding block and used for grinding the curved-surface diamond. The brittle fracture process can be regulated and controlled, the grinding capacity of the grinding wheel is improved, the temperature of a grinding area is reduced, the grinding quality is improved, and the method is suitable for manufacturing high-end equipment such as high-power laser windows and spaceflight infrared optical systems.

The utility model discloses a multi-petal elastic grinding wheel for grinding and repairing an outer chamfer of an aluminum oxide porcelain tube, which belongs to the technical field of aluminum oxide porcelain shell processing and comprises a grinding wheel base body. One end of the grinding wheel base body is connected with a chamfering machine power rotating shaft, and the other end is provided with a plurality of grinding wheel strips through fixing pieces. The grinding wheel strips are of a bowl-shaped structure and tend to expand from one side of the grinding wheel base body to the other side of the grinding wheel base body. When the ellipse shape of the end face of a product is irregular, the side edges of the end face make contact with the split elastic grinding wheel strips at the corresponding positions respectively and generate corresponding deformation, grinding and repairing of the outer chamfer of the oval aluminum oxide ceramic tube are achieved, and the multi-petal grinding wheel diamond grinding strips can effectively make contact with the outer edges of the ceramic tube no matter the diameter of the aluminum oxide ceramic tube and the ellipticity of the end face. And the outer chamfer of the end face is ground, so that the uniformity and consistency of the outer chamfer processing of the end face of the elliptical aluminum oxide porcelain tube are fully ensured.

The utility model belongs to the technical field of ceramic grinding roller grinding wheels, and particularly relates to a ceramic grinding roller grinding wheel which comprises a grinding wheel outer wheel, a grinding wheel inner wheel and a fixing ring, the grinding wheel inner wheel is arranged in the grinding wheel outer wheel, the fixing ring is fixedly connected to the inner wall of the grinding wheel outer wheel, an inserting groove is formed in the fixing ring, and the grinding wheel inner wheel is located in the inserting groove. The insertion grooves are matched with the insertion grooves in an insertion manner; the multiple sliding grooves are formed in the grinding wheel inner wheel and communicate with the inner wall of the insertion groove, multiple insertion blocks are slidably connected into the multiple sliding grooves correspondingly, one end of each insertion block extends to the inner wall of the insertion groove and is in insertion fit with the insertion groove, and multiple first threaded rods are in threaded connection into the multiple insertion blocks correspondingly; the ceramic grinding roller grinding wheel solves the problems that when the outer wheel is seriously abraded or fractured in the long-time use process, due to the fact that the outer wheel and the inner wheel of the ceramic grinding roller grinding wheel are of an integrated structure, a user needs to replace the whole ceramic grinding roller grinding wheel, and the replacement cost is high.

The utility model relates to the technical field of grinding tools, and particularly discloses a diamond steel-aluminum composite matrix grinding wheel which comprises a first matrix. Rotating grooves are rotationally and symmetrically formed in the first base body; a rotating block is inserted into the rotating groove; a second base body is fixedly connected to the rotating block; holes in the second base body and the first base body are in threaded connection with fasteners; a plurality of grinding blocks are sintered on the upper surface of the second base body; the second base body made of steel can be sintered and fixed with a plurality of grinding blocks at the temperature of 750 DEG C or above, and then the second base body and the first base body made of aluminum are connected and fixed through the fasteners, so that high-temperature diamond sintering is achieved, the overall weight is reduced, manual loading and unloading operation is convenient, fast and safe, damage to a grinding machine spindle is small, and the service life of the grinding machine is prolonged. And the driving power of the grinding machine can be reduced.

The invention relates to a grinding and / or polishing pad (48b; 48c) for a grinding and / or polishing machine (12a), with an abrasive interface (80a; 80b; 80c) and with at least one extraction opening (46b; 46c) arranged on a side facing away from the abrasive interface (80a; 80b; 80c). It is proposed that the grinding and / or polishing pad (48b; 48c) has at least one intake opening (78b; 78c) for drawing in ambient air, located on the side facing away from the abrasive interface (80a; 80b; 80c) and in particular on the side surface (110b).

The design of a stainless-steel cylindrical tool for manual grinding and polishing of cement-based thin sample (two cylinders one withing the other, connected by the movable threaded holder with a plate, that passes through the middle) enables very precise removal of sample layers to its thickness of 1-mm ( 1 / 32 inch) and less. The squared, young aged sample rests on the circular plate on a holder, that can be slowly and safely rotated during thin layer removal, to obtain a smooth and flat sample surface, which can produce sharp digital images in ESEM, necessary for detailed and accurate image analysis. The cylindrical tool can be reassembled. It is reusable, easy to maintain and clean. Its design is practical since inner cylinder can be replaced if damaged, with the identically designed inner cylinder or with differently designed inner cylinder adjusted to another sample size.

This invention discloses a water-grinding edge wheel and its preparation method. The preparation method includes the following steps: (1) Batching: Weigh and prepare the corresponding metal powder according to the metal cutter head formula of the water-grinding edge wheel; (2) Loading: Pour the metal powder into a pre-assembled graphite mold; wherein, by improving the structure of the graphite mold, the metal cutter head is radially pressed and formed in the mold hot pressing process; (3) Radial hot pressing of the cutter head: Radial hot pressing and sintering is performed according to the preset process parameters, so that the metal powder forms an alloy cutter head, and the longitudinal horizontal height of each alloy cutter head is consistent; (4) Welding: Disassemble the graphite mold, take out the cutter head, and weld the metal cutter head to the substrate to obtain the finished water-grinding edge wheel. This edge wheel preparation method ensures that each metal cutter head has the same horizontal height, reduces the consumption of grinding wheels in the grinding / sharpening process, greatly reduces costs, and at the same time, increases the service life of the edge wheel by more than 2 times.

An abrasive article with a bonded abrasive body having a ratio of diameter to thickness of at least 10:1. The abrasive article can include secondary abrasive particles contained in a bond material, wherein the secondary abrasive particles include agglomerated primary abrasive particles.

A cemented carbide comprising a first phase comprising a plurality of tungsten carbide particles, a second phase comprising cobalt, and a third phase, in which the content of the first phase in the cemented carbide is 65-85 vol% inclusive, the content of cobalt (C5) in the cemented carbide is 3-15 vol% inclusive, and the content of tungsten carbide particles in the cemented carbide is 0.5-10 vol% inclusive. The third phase is composed of at least one element selected from the group consisting of titanium, tantalum, niobium, zirconium and tungsten and at least one of carbon and nitrogen, the third phase does not contain tungsten carbide, the total content C of titanium, tantalum, niobium and zirconium in the cemented carbide is 2-8 mass%, the Vickers hardness a of the cemented carbide is 12.5-14.5 GPa, and the Vickers hardness b of the cemented carbide is 12.5-14.5 GPa. The Vickers hardness a is measured at a point P1 at a distance of 5 [mu] m from the surface of the cemented carbide in the normal direction of the surface, and the cemented carbide includes a first region sandwiched between an imaginary plane Q1 at a distance of 5 [mu] m from the surface and an imaginary plane Q4 at a distance of 200 [mu] m from the surface. The first region has a second region sandwiched between an imaginary plane Q2 at a distance of 10 [mu] m from the surface and an imaginary plane Q3 at a distance of 50 [mu] m from the surface, and in the first region, a point P2 at which a Vickers hardness b, which is the maximum Vickers hardness, is present in the second region. The difference (b-a) between the Vickers hardness (b) and the Vickers hardness (a) is 1.8 GPa or more.

The utility model relates to the technical field of polishing steel wire wheel brushes, and discloses a corrugated polishing steel wire wheel brush with dense bristles, which comprises a protective ring, the bottom of the protective ring is fixedly connected with a connecting rod, a polishing component is arranged in the protective ring, the polishing component comprises a steel wire, the steel wire is arranged in the protective ring, and the connecting rod is fixedly connected with the connecting rod. The steel wire is in a corrugated shape, the bottom of the steel wire is fixedly connected with a containing plate, the bottom of the containing plate is arranged on the inner wall of the protection ring, and a limiting block is arranged on the top of the containing plate. According to the utility model, through the reasonable design of amplitude and wavelength, when the corrugated steel wire is in contact with a workpiece, the contact area is obviously increased, the surface of the workpiece is smoother and can conform to the surface of the workpiece, scratches are reduced, blockage by chippings can be prevented, the service life is prolonged, and the problems of low polishing efficiency, easiness in damaging the workpiece and easiness in blockage of the traditional straight wire brush are solved; and the practicability, durability and adaptability of the polishing wheel brush are improved.

This invention provides a backup pad with a cooling function that can contain solid carbon dioxide within the backup pad itself, enabling simple and excellent polishing work. [Solution] A backup pad with a cooling function, used attached to a polishing device, comprising a backup pad body having a storage section 13 capable of containing solid carbon dioxide inside, and a lid 20 positioned at the opening 15 of the storage section to prevent the solid carbon dioxide from falling out of the opening, the lid including a hook-and-loop fastener layer and a far-infrared radiation layer, the hook-and-loop fastener layer engaging with the polishing member 200, and the far-infrared radiation layer having a plurality of ventilation holes, the gas generated by the sublimation of solid carbon dioxide being guided to the polishing member side through the ventilation holes and the hook-and-loop fastener layer.

The application relates to a grinding wheel, in particular to a grinding wheel which can be used without frequent dressing after the grinding wheel is worn, comprising: a grinding wheel base body provided with a mounting base surface and a first axis line perpendicular to the mounting base surface; at least two grinding wheel pieces with the same outer diameter and arranged in a circle, all the grinding wheel pieces are distributed on a first circle with the first axis line as the center, and the axis lines of the grinding wheel pieces are parallel to the first axis line; the peripheral wall of the grinding wheel piece at least partially protrudes from the peripheral edge of the grinding wheel base body in the radial direction of the grinding wheel base body; a locking assembly is arranged for locking the grinding wheel piece on the grinding wheel base body; in the unlocking state, the locking assembly releases the locking force, so that the grinding wheel piece can rotate around the axis line thereof relative to the grinding wheel base body or be taken off the grinding wheel base body; when the grinding surface of the grinding wheel piece is worn, the grinding wheel piece is rotated by a certain angle around the axis line thereof, so that the unworn part of the grinding wheel piece is rotated to a working position and the grinding wheel piece can be continuously used, and thus the grinding wheel does not need to be frequently dressed.

The utility model discloses an electric polishing disc which comprises a body, the body comprises a polishing disc, an air suction disc and an outer ring disc are sequentially fixed on one side of the polishing disc from inside to outside, and a fixed disc and a base disc are sequentially fixed on the other side of the polishing disc from inside to outside. A gravity adjusting unit used for enabling the weight of the body to be evenly distributed and rotating to be stable is fixedly embedded in the air suction disc. An air suction channel for dispersing center suction of the body is formed between the inner side of the outer ring disc and the surface of the air suction disc. The polishing disc is reasonable in structural design, the gravity adjusting unit is embedded in the air suction disc, the weight of the body is evenly distributed, the purpose of being more stable during high-speed rotation is achieved, the air suction channel is formed between the inner side of the outer ring disc and the surface of the air suction disc, in the high-speed rotation process of the polishing disc, center suction force is dispersed to the periphery of the disc body, and the polishing effect is improved. And the rotating motion of the polishing disc is further stabilized, the implementation effect is good, and the use experience feeling of a user is improved.